2. Study of oscilloscope and measurement of sinusoidal voltage, frequency and power factor.

3. Measurement of time constant of series R-C electric circuits.
4. Frequency response of RC and RL circuits.
5. Resonant frequency and frequency response of a series RLC circuit.
6. Study of the effect of Q on frequency response and bandwidth of series and
parallel resonant circuits.

7. Study of low pass and high pass filters.
8. Measurement of real power, reactive power, power factor and impedance of RC, RL and RLC circuits using voltmeters and ammeters.

9. Power measurement in a three phase circuit by two Wattmeters.
10. Study of first and second order circuit transients by digital simulation.

1. Verification of Kirchoff’s voltage and current laws, Thevenin’s and Norton’s
Theorems

Aim
To verify Kirchchoff’s voltage and current laws, Thevenin’s and Norton’s Theorems.

Exercises
1. Verify the Kirchoff’s voltage and current law in a series circuit and in a circuit with series and parallel combination.
2(a) Determine the Thevenin equivalent voltage VTH and resistance RTH of a
DC circuit with a single voltage source.

(b) Verify experimentally the values of VTH and RTH in solving a series –
parallel circuit.

3. Determine the values of Norton’s constant – current source IN and Norton’s current – source resistance RN in a DC circuit containing one or two voltage sources.

2. Study of Oscilloscope and Measurement of sinusoidal voltage, frequency and
power factor

Aim

To study the dual trace oscilloscope controls and to AC voltage values, time and frequency of A.C voltage with the oscilloscope.

3. Measurement of time constant of series R-C electric circuits
Aim
To determine experimentally the time taken by a capacitor to charge and discharge through a resistance.

Exercises
a. Determine experimentally the time it takes a capacitor to charge through a resistor and obtain a plot between voltage across capacitor and time.

b. Determine experimentally the time it takes a capacitor discharge through a resistor and obtain a plot between voltage across capacitor and time.

c. Experimentally verify that the current and voltage in a capacitive circuit are out of phase using dual trace oscilloscope.
3. Frequency response of RC and RL circuits
Aim
1. To study the effect on impedance and current of a change in frequency in a series RL circuit.

2. To study the effect on impedance and current of a change in frequency in a series RC circuit.

Exercises
1. Conduct suitable experiment and draw the following graphs for an RL circuit.

7. Measurement of real power, reactive power, power factor and impedance of RC, RL and RLC circuits using voltmeters and ammeters.

Aim
To measure real power, reactive power, apparent power, power factor and impedance in A.C circuits using ammeters and three voltmeters.

Exercises
1. Experimentally determine the power factor, real power, reactive power, apparent power and impedance in a RL series circuit using voltmeter and ammeter. Draw the phasor diagram using the measurements.

2. Experimentally determine the power factor, real power, reactive power, apparent power and impedance in a RC circuit. Draw the phasor diagram using the measurements.

3. Experimentally determine the power factor, real power, reactive power, apparent power and impedance in a RLC series circuit using voltmeters and ammeters. Draw the phasor diagram using the measurements.

9. Power Measurement in a three phase circuit by two Wattmeters
Aim
To measure power in a three phase circuit by two wattmeter method.
Exercises
1. Measure the real and reactive power input and power factor to a three phase induction motor at different load condition using two watt- meters

10. Study of first and second order circuit transients by digital simulation

Aim
To study the first and second order circuit transients by digital simulation.

Exercises
1. Obtain the response for the following cases using MATLAB software or any other equivalent.

a. Source free or zero input response of RL and RC circuit.

b. D.C or step response of RL and RC circuits using available software.

c. Obtain the source free and step response of RLC circuit using available softwares.